It’s part of official Xi CCP policy to acquire Taiwan.

Most experts put the move around 2027 when the next tranche of ships are finished.

On the lower end, Apple just stopped releasing updates because there was no useful advantage to new chips.

On the high end, Apple was fighting between their desire to have a machine pleasant to use, and one that would fire the fans full speed at boot to keep up maximum performance without thermal throttling.

An architecture switch where a lot of software won’t run well (or at all) is a big risk for them that people could start to go elsewhere in non-trivial numbers.

Apple, Linux, Chromebook.

Yes they have a compatibility layer for running x86 on ARM. They could make it for other archs. But that’s still a big effort and consumers may not trust.